We look at the division of 50131221 by 303 
We're looking to find how many times 303 goes into 50131221.

Advancing to step 1:
5 divided by 303 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 303

On to step 2:
303 goes into 50 0 times with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 50 and we're left with 50.
Bring next digit (1) of the dividend behind the 50 and repeat the process: 501 / 303

Going ahead to step 3:
303 goes into 501 1 times with a remainder of 198.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 303 away from 501, we end up with 198.
Fetch the next digit (3) from the dividend, attach it to 198 and continue: 1983 / 303

Advancing to step 4:
If we divide 1983 by 303, we get 6 and a remainder of 165.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
The remainder is 165 after subtracting 1818 from 1983.
Grab the next digit (1) from the dividend, add it to 165, then carry on: 1651 / 303

Advancing to step 5:
303 goes into 1651 5 times with a remainder of 136.
The next digit of our result is 5. 
Result so far: 165.0
Deduct 1515 from 1651 and we're left with 136.
Include the next digit (2) from the dividend after 136, then repeat: 1362 / 303

On to step 6:
The number 303 fits into 1362 4 times, leaving a remainder of 150.
Record the quotient 4 as the next digit in the result. 
Result so far: 1654.0
The remainder is 150 after subtracting 1212 from 1362.
Grab the next digit (2) from the dividend, add it to 150, then carry on: 1502 / 303

Step 7:
303 goes into 1502 4 times with a remainder of 290.
Put 4 as the next digit of the answer. 
Result so far: 16544.0
Subtract 1212 from 1502 to get 290.
Append the next digit (1) from the dividend to 290 and continue with: 2901 / 303

Moving on to step 8:
303 can be fit into 2901 9 times, resulting in a remainder of 174.
The next digit of our result is 9. 
Result so far: 165449.0
The remainder is 174 after subtracting 2727 from 2901.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Moving on to step 9:
303 goes into 1740 5 times with a remainder of 225.
Use 5 as the next digit of our solution. 
Result so far: 165449.5
Subtract 1515 from 1740 to get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 10:
2250 divided by 303 is 7 with a remainder of 129.
Write down 7 as next digit of the result. 
Result so far: 165449.57
If we subtract 2121 from 2250, we get 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Advancing to step 11:
If we divide 1290 by 303, we get 4 and a remainder of 78.
The next digit of our result is 4. 
Result so far: 165449.574
Deduct 1212 from 1290 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 12:
780 divided by 303 is 2 with a remainder of 174.
Write down 2 as next digit of the result. 
Result so far: 165449.5742
If we subtract 606 from 780, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Let's proceed to step 13:
If we divide 1740 by 303, we get 5 and a remainder of 225.
The number 5 becomes the next digit in our result. 
Result so far: 165449.57425
Deduct 1515 from 1740 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Going ahead to step 14:
The number 303 fits into 2250 7 times, leaving a remainder of 129.
Record the quotient 7 as the next digit in the result. 
Result so far: 165449.574257
The remainder is 129 after subtracting 2121 from 2250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Advancing to step 15:
303 goes into 1290 4 times with a remainder of 78.
Put 4 as the next digit of the answer. 
Result so far: 165449.5742574
The remainder is 78 after subtracting 1212 from 1290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 16:
780 divided by 303 is 2 with a remainder of 174.
Write down 2 as next digit of the result. 
Result so far: 165449.57425742
If we take 606 away from 780, we end up with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

The final result is 165449.57425742 with a remainder of 1.74e-07.